<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <div id="app">
    <div class="container">
      <input id="el-val1" type="text" placeholder="请输入val1" />
      <input id="el-val2" type="text" placeholder="请输入val2" />
    </div>
    <div class="options">
      <button id="btn-multiply">相乘</button>
      <button id="btn-divide">相除</button>
    </div>
  </div>
</body>
</html>